Opportunistic spectrum access: Challenges, architecture, protocols

C. Santivanez, R. Ramanathan, C. Partridge, R. Krishnan, M. Condell, S. Polit

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

8 Citas (Scopus)


We consider the concept of opportunistic spectrum access (OSA) - whereby radios identify unused portions of licensed spectrum, and utilize that spectrum without adverse impact on the primary licensees. OSA allows both dramatically higher spectrum utilization and near-zero deployment time, with an obvious and significant impact on both civilian and military communications. We discuss two broad classes of challenges to OSA: spectrum agility, which involves wideband sensing, opportunity identification, coordination and use; and policy agility, which enables regulatory policies to be applied dynamically using machine understandable policies. Focusing on spectrum agility, we present an architecture based on an OSA adaptation layer. We describe protocols for OSA, including a hole information protocol, idle channel selection and use, and an access protocol for the coordination channel. We present a simulation study, discuss insights, and show that even a simple protocol for opportunistic spectrum allocation can provide an order-of-magnitude performance improvement in throughput over a legacy system.

Idioma originalInglés
Título de la publicación alojadaProceedings of the 2nd Annual International Workshop on Wireless Internet, WICON '06
EstadoPublicada - 2006
Publicado de forma externa
Evento2nd Annual International Workshop on Wireless Internet, WICON '06 - Boston, MA, Estados Unidos
Duración: 2 ago. 20065 ago. 2006

Serie de la publicación

NombreACM International Conference Proceeding Series


Conferencia2nd Annual International Workshop on Wireless Internet, WICON '06
País/TerritorioEstados Unidos
CiudadBoston, MA


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